Thread-guide for spinning or twisting machines.



J. B. PREST. THREAD GUIDE FOR SPINNING 0R TWISTING MACHINES.

APPLIOATION FILED MAY 31, 1911.

Patented Oct. 17,1911.

I X 22 XL JZ/uwE 25W JOHN E. PRES'I, 0F MELROSE, MASSACHUSETTS.

THREAD-GUIDE FOR SPINNING OR TWISTING MACHINES.

Specification of Letters Patent.

Application filed May 31, 1911.

Patented Oct. 17, 1911.

Serial No. 630,361.

To all whom it may concern:

Be it known that I, JOHN E. PREs'r, a citizen of the United States, andresident of Melrose, county of Middlesex, State of Massachusetts, haveinvented an Improvement in Thread-Guides for Spinning or TwistingMachines, of which the following description, in connection with theaccompanying drawing, is a specification, like characters on the drawingrepresenting like parts.

'This invention has for its object the production of novel threadguiding means for spinning or twisting machines, so constructed andarranged that when the finger boards are swung into inoperative positlonthere cannot be any injury to the drawing rolls by reason of engagementwith the thread guides.

This invention in its broad features is made the subject of my priorpatent No. 995,564 granted June 20, 1911, aid the present invention isan improvement thereover in certain features whereby the device isconstructed and arranged to withstand shocks and strains which woulddisturb its position, and whereby the device is simplified and reducedin cost without impairing, but rather increasing, its efficiency.

In the forms of the invention illustrated in my aforesaid patent thehinged connection with the thread board is relied upon to maintain thefinger board from any deflection in the horizontal plane which itoccupies when in' operative position. In the present inventionadditional means are provided for retaining the finger-board inoperative position so that if it be struck transversely or in the planeof its operative position, or be strained in such direction, it will beheld firmly in place.

In the construction shown in my aforesaid patent the hinged memberattached to the thread board is extended forwardly, and hinge eyes areformed on it and on one of the lateral or side flanges of thefinger-board, and a long pintle connects these hinge eyes. As one of thefeatures of the present invention I eliminate this long hingedconnection and pivot the rear flange of the finger-board at one enddirectly to the member secured to the thread-board, thus materiallysimplifying the device.

The nature of the invention will be more fully understood from theaccompanying description and drawings, and will be particularly pointedout in the annexed claims.

The drawings show the preferred forms of the invention.

In the drawings, Figure 1 is a side elevation and part section of athread-guide embodying one improved form of my present invention; Fig. 2is a front elevation of the construction shown in Fig. 1, twofingerboards being shown, one in operative and one in inoperativeposition; Fig. 3 is a top plan view of the construction shown in 1 and2; Fig. 4 is a side elevation and part section of another form 'ofthread-guide, the roller beam not being shown; Fig. 5 is a top plan viewof the construction shown in Fig. 4; and Fig. 6 is a front elevation ofthe construction shown in Figs. 4 and 5 with the finger-board and itsthread guide in its inoperative position.

The construction illustrated in Figs. 1, 2 and 3, is similar in its mainfeatures to the construction shown in my aforesaid patent. A representsthe usual roller beam to which is pivotally connected the thread-board2. The finger-boards are shown as composed of two metallic members, onefitting within the downturned edges or flanges of the other, the uppermember 7 having its edge downturned at the front and rear as at 8 and 9,and at one side 10, the front edge or flange having a hole therein forthe shank 11 of the thread-guide proper. The thread-guide is of theusual form illustrated, and has the inner end of the shank bent intoU-form as indicated at 13 to prevent rotative' movement of the shankwhen clamped between the upper member and the lower or clamping member14 of the finger-board. A headed clamping bolt 15 passes through saidmember 14 and at its lower end receives a nut 16 by which the twomembers are drawn together to clamp between them the shank of thethread-guide, and which when loosened allows the adjustment of thethread-guide. In the construction shown in Figs. 1, 2 and 3, the uppermember 7 at the side opposite the downturned flange 10 is formed intohinge eyes 17, and a limiting stop 18. The other hinge member is a metalplate 21 adjustably secured to the front face of the flange 3 of thethread-board and bent to form the hinge eye 19. A pintle 24 extendsthrough the alined hinge eyes 17 and 19 whereby the finger-board ispivotally connected to the hinge member transversely to the face of theflange 3, and so that the finger-board swings laterally into and out ofoperative position. As shown at the left of Fig. 2, and at the upper endof Fig. 3, when in its inoperative position the finger-board is at oneside of the yarn path and entirely clear of the same so that completeand unobstructed access can be had for doffing, piecing up, etc. Theplate 21 is provided with an elongated slot 22 for the reception of afastening: screw 23 which secures the bracket to the front face of theflange 3, and the hinge member is bent rearwardly at its lower edge asshown at 210 to fit against the lower edge of the said flange 3 of thethread-board and maintain the hinge member in position. In the presentinvention the member attached to the face of the flange 3 of thethread-board and herein shown as a plate 21 is formed to present anupwardly extending or projecting flange 211, which in the form showninFigs. 1, 2- and 3 extends above the upper surface of the thread-board2 so that this extended or proj ecting flange is out of contact with thethread-board 2. This extended or projecting flange passes in between themembers 7 and 14; of the finger-board and fits against the inside of thedepending flange 9 of the up per member 7. It will thus be seen thatwhen the finger-board is in its operative po sition as shown in Fig. 1,at the right hand side of Fig. 2 and at the bottom'of Fig. 3, the flange211 fitting inbetween the flange 9 and the member 14 holds thefinger-board in fixed position and prevents its being-bent or swungtransversely or in its plane out of operative position. For any furtherdetails of construction other than as above set forth reference may behad to my aforesaid patent.

In Figs. 4, 5 and 6 another and similar form or device is shownembodying features of this invention. Therein the same threadboard 2with its depending flange 3 is shown. The construction of thethread-guide proper, and its connection to the finger-board are the sameas in the form already described.

The finger-board is also made of two similar members, that is, an uppermember and a lower member. In this case the upper memher is bentdownwardly to form a depending flange entirely around its periphery,thus giving it rigidity. This periphery may be of any desired shape, andit is herein shown as somewhat trapezoidal. The depending flange 90 ofthe upper member 70 at the rear is somewhat deeper than other portionsof the periphery, and at the left hand end as shown is still furtherenlarged and apertured to form a hinge eye while the depending flangeconnecting at the opposite end is tapered as shown at 100 toward thefront of the finger-board. The other hinge member is a metal plate 121adjustably secured to the front face of the flange 3 of the threadboard,and apertured to form a hinge eye at its left hand end. A pintle 240extends through the alined hinge eyes whereby the finger-board ispivotally connected to the hinge member transversely to the face of theflange 3, and so that the finger-board swings laterally into and out ofoperative position. The hinge member 121 is adjustably secured inposition by the set-screw 230 and is provided with the rearwardlyprojecting flange 212 as inthe form previously described. In this formof the invention'the member attached to the face of the flange 3 of thethread-board and herein shown asv a plate 121 is formed to present anupwardly extending orprojecting flange 213, which in the form shown inFigs. 4, 5-and 6, extends in front of the flange 3 and spaced therefromto a point slightly below the upper surface of the thread-board, so thatthis'extended or projecting flange'is out of contact with thethread-board 2. This extended or projecting flange passes in' betweenthe two mem bers'of the finger-boardand fits against the inside of thedepending flange 90 of the upper-'member. It will thus'be seen that whenthe finger-board is in its operative po-' sition as shown in Figs-4c and5v the flange 213 fits against the inner side of the depend ing flange90, and the flange 90 fits: against the outer face of the depending:flange 3 of the threadboard, (for the flange 213- is spaced justsufliciently far from the flange?)- to receive the flange 90) and thefinger-board is held in fixed position and is prevented from being bentor swung transversely or in its plane out of operative position. In theconstruction of Figs. 4L, 5 and 6, the top of the flange 213 is sopositioned with respect to the top of the thread-boardthat when thefinger-board is in operative position it rests upon the topof the flange213 withthe top face of the finger-board in the same plane asthe topface of the thread-board.

The particular construction of the finger board and the means forclamping the thread guide thereon in adjacent position may be changed ormodified in various ways-:without departing from my invention, andchanges or modifications in different details of construction andarrangementmay be made by those skilled in the art without departingfrom the spirit andscope of my invention as set forth in the claimsannexed hereto.

Having fully described my invention,

ed frontward from the latter to permit upward and lateral swingingmovement of the finger-board into inoperative position, and meanslocated on the thread-board engaging a lateral portion of thefinger-board when in operative position.

2. The combination with a thread-board and a finger-board having athread guide, of a hinge member mounted on the threadboard, acooperating hinge member on the finger-board, and a pintle connectingsaid hinge members and extending transversely to the front face of thethread-board, the finger-board being movable upwardly and laterally withrespect to the thread-board,

the hinge member on the thread-board presenting an upwardly projectingportion engaging a lateral portion of the finger-board when in operativeposition.

8. The combination with a thread-board and a finger-board having athread-guide, of a hinge member mounted on the threadboard, acooperating hinge member on the finger-board, and a pintle connectingsaid hinge members and extending transversely to the front face of thethread-board, the finger-board being movable upwardly and laterally withrespect to the thread-board, said finger-board having at its rear adownwardly depending flange and the hinge member mounted on thethread-board hav ing an upwardly projecting flange, the said flangesengaging when the finger-board is in operative position to preventtwisting of the finger-board in its plane.

4:. In an apparatus of the class described, a threadboard, a membermounted on the thread-board and having a flange extended upwardly andout of contact with the thread-board, a finger-board having a threadguide and a depending flange fitting behind and against said upwardlyextended flange, and a pintle connecting said flanges near one end andtransversely thereof,

whereby the finger-board may be swung laterally into and out ofoperative position, and when in operative position may be held againsttwisting movement in its plane by the engagement of said flanges.

5. In an apparatus of the class described, a thread-board, a membermounted on the thread-board and having a flange extended upwardly andout of contact with the thread-board, a finger-board having an uppermember presenting at the rear a downwardly depending flange, and a lowermember separated at the rear from said flange to form a recess adaptedto receive the flange of the member mounted on the thread -board, apintle connecting said flanges near one end transversely thereof,whereby the finger-board may be swung laterally into and out ofoperative position, and when in operative position may be held againsttwisting movement in its plane.

6. In an apparatus of the class described, a thread-board, a membermounted on the front face of the thread-board and having its upperportion formed to present a flange separate from the front face of thethreadboard and with its top edge slightly below the top of thethread-board, a finger-board having a thread guide and at its rear adepending flange, a pintle connecting said flanges near one end andtransversely thereof, whereby the finger-board may be swung laterallyinto and out of operative position, and when in operative position willhave its flange fitting between the thread-board and the flange of themember mounted thereon.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

JOHN E. PREST. Witnesses:

Bnssm G. MORRIS, THOMAS J. DnUMMoNn.

Copies of this patent may be obtained for five cents each, by addressingthe Gommissioner of Patents, Washington, D. G.

